Apparatus and method for manufacturing a rock bolt

Apparatus for bending and twisting elongated pieces

Apparatus for continuously producing tube having helical grooves

Apparatus for continuously producing tube having helical grooves

Corrugated elliptical waveguide with permanent twist

Machine for continuously cold working steel bar

Metal stock bender twister adaptor

Method and apparatus for fabricating helically shaped...

Method of manufacturing connecting devices

Method of wire straightening and a wire straightening machine fo

Method of, and apparatus for producing multi-dimensionally bent

Twist drawn wire, process and apparatus for making same

Twisting apparatus

Twisting apparatus and method

Twisting apparatus for ultrafine rectangular bar